Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
phuc ban » phuc van, thuc ban, thuoc ban
hieu van » hieu va, thien van, lieu va
cau phuc » cau truc, chau phu, huu phuc
hanh va » hang va, hanh vi
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
van cau » van dau, van hau, van chat
cua te » cua tu
anh vi » hanh vi, anh va, anh ve
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky nang x hoi. hieu van cau phuc ban ((anh vi) or (hanh va)) ((cua te) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu van cau phuc ban ((anh vi) OR (hanh va)) ((cua te) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu van cau phuc ban ((anh vi) or (hanh va)) ((cua te) or (cau treo))*.